9181201 has 2 divisors, whose sum is σ = 9181202. Its totient is φ = 9181200.

The previous prime is 9181189. The next prime is 9181213. The reversal of 9181201 is 1021819.

It is a balanced prime because it is at equal distance from previous prime (9181189) and next prime (9181213).

It can be written as a sum of positive squares in only one way, i.e., 6027025 + 3154176 = 2455^2 + 1776^2 .

It is a cyclic number.

It is not a de Polignac number, because 9181201 - 2¹¹ = 9179153 is a prime.

It is not a weakly prime, because it can be changed into another prime (9181261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4590600 + 4590601.

It is an arithmetic number, because the mean of its divisors is an integer number (4590601).

Almost surely, 2^9181201 is an apocalyptic number.

It is an amenable number.

9181201 is a deficient number, since it is larger than the sum of its proper divisors (1).

9181201 is an equidigital number, since it uses as much as digits as its factorization.

9181201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 22.

The square root of 9181201 is about 3030.0496695599. The cubic root of 9181201 is about 209.3950921834.

The spelling of 9181201 in words is "nine million, one hundred eighty-one thousand, two hundred one".